/Engine/Source/Runtime/Engine/Public/Animation/AnimInstanceProxy.h
Gets a checked node given an index into the node property array
[FAnimNode_Base](API\Runtime\Engine\Animation\FAnimNode_Base) * GetCheckedMutableNodeFromIndexUntyped ( int32 NodeIdx, [UScriptStruct](API\Runtime\CoreUObject\UObject\UScriptStruct) * RequiredStructType )